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Elise49
@Elise49
April 2019
2
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Développer et simplifier l'expression :
A= -5x-(3-2x)² + (2x²+5)
factoriser l'expression:
D= 3x(x-1)+2x
E= (x-6)(x+2)-(x-6)(2x+3)
F= (x-1)²+(2x-3)(x-1)
G= (x-1)²-(2x-3)(x-1)
H= (2x-1)²-(x+2)²
j'ai vraiment besoin d'aide svp :(
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nathalienouts
A= -5x-(3-2x)² + (2x²+5)
A = -5x-(9-12x+4x²) +2x²+5
A = -5x-9-12x-4x²+2x²+5
A = -2x²-17x-4
factoriser l'expression:
D= 3x(x-1)+2x on met x en facreur
D = x(3(x-1)+2)
E= (x-6)(x+2)-(x-6)(2x+3) on met x-6 en facteur
E = (x-6)(x+2-2x-3)
E = (x-6)(-x-1)
F= (x-1)²+(2x-3)(x-1) on met x-1 en facteur
F = (x-1)(x-1+2x-3)
F =(x-1)(3x-4)
G= (x-1)²-(2x-3)(x-1) on met x-1 en facteur
G = (x-1)(x-1-2x+3)
G = (x-1)(-x+2)
H= (2x-1)²-(x+2)² a
²-b² = (a+b)(a-b)
H = (2x-1+x+2)(2x-1-x-2)
H = (3x+1)(x-3)
1 votes
Thanks 1
nathalienouts
donne moi le lien
nutella62
A=-5x-(3-2x)²+(2x²+5)
A=-5x-(9-12x+4x²)+(2x²+5)
A=-5x-9-12x-4x²+2x²+5
A=-2x²-17x-4
D=3x(x-1)+2x
D=x(3(x-1)+2)
E=(x-6)(x+2)-(x-6)(2x+3)
E=(x-6)(x+2-2x-3)
E=(x-6)(-x-1)
F=(x-1)²+(2x-3)(x-1)
F=(x-1)(x-1+2x-3)
F=(x-1)(3x-4)
G=(x-1)²-(2x-3)(x-1)
G=(x-1)(x-1-2x+3)
G=(x-1)(-x+2)
H= (2x-1)²-(x+2)² --> identité remarquable
H = (2x-1+x+2)(2x-1-x-2)
H = (3x+1)(x-3)
J'espère t'avoir aidé !
1 votes
Thanks 1
nutella62
pour le A non puisque -12-5=-17 ^^
nutella62
pour le D si, car x est en facteur :)
nutella62
ah oui exact tu as raison je me suis trompée c'est +12x excuse moi :/
nutella62
ok :)
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Elise49
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Aidez moi svp, je n'ai pas compris mon DM..
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Factoriser l'expression A(x)= (5x-4)(4x-2)+3(1-2x)(2x+3) aidez moi svp :(
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Factorisation aider moi !
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Elise49
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Pourriez vous m'aider je n'est pas compris mon DM de math?
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Exercice d'anglais, pas compris aidez moi svp!:)
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Lista de comentários
A = -5x-(9-12x+4x²) +2x²+5
A = -5x-9-12x-4x²+2x²+5
A = -2x²-17x-4
factoriser l'expression:
D= 3x(x-1)+2x on met x en facreur
D = x(3(x-1)+2)
E= (x-6)(x+2)-(x-6)(2x+3) on met x-6 en facteur
E = (x-6)(x+2-2x-3)
E = (x-6)(-x-1)
F= (x-1)²+(2x-3)(x-1) on met x-1 en facteur
F = (x-1)(x-1+2x-3)
F =(x-1)(3x-4)
G= (x-1)²-(2x-3)(x-1) on met x-1 en facteur
G = (x-1)(x-1-2x+3)
G = (x-1)(-x+2)
H= (2x-1)²-(x+2)² a²-b² = (a+b)(a-b)
H = (2x-1+x+2)(2x-1-x-2)
H = (3x+1)(x-3)
A=-5x-(9-12x+4x²)+(2x²+5)
A=-5x-9-12x-4x²+2x²+5
A=-2x²-17x-4
D=3x(x-1)+2x
D=x(3(x-1)+2)
E=(x-6)(x+2)-(x-6)(2x+3)
E=(x-6)(x+2-2x-3)
E=(x-6)(-x-1)
F=(x-1)²+(2x-3)(x-1)
F=(x-1)(x-1+2x-3)
F=(x-1)(3x-4)
G=(x-1)²-(2x-3)(x-1)
G=(x-1)(x-1-2x+3)
G=(x-1)(-x+2)
H= (2x-1)²-(x+2)² --> identité remarquable
H = (2x-1+x+2)(2x-1-x-2)
H = (3x+1)(x-3)
J'espère t'avoir aidé !